Regarding sandblasting of carbon steel pipes, the issue of sand selection
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Dear Haiyouhao1, I saw today that the construction team added yellow sand to the sandblasting machine, using it for sandblasting and rust removal on carbon steel pipes and fittings. Is this approach appropriate? Generally, cast steel beads are used for sandblasting carbon steel, while quartz sand is used for stainless steel. Are there any other alternative materials? Can sandblasting using yellow sand meet the quality standards?
Yellow sand is obviously a rip-off; it doesn’t have enough stiffness. If the process requires rust removal, quartz sand is at least necessary. However, for rust removal on carbon steel, a wire brush is usually sufficient to meet general surface requirements.
It is necessary to remove rust; once cleanliness and roughness meet the requirements, a primer should be applied. It was the first time I saw them add yellow sand
Quartz sand can be reused, and the cost is not high. The yellow sand does not meet the requirements for surface roughness, resulting in a poor quality of paint application.
Yellow sand is not effective for rust removal; quartz sand is the most common material that works well for removing rust from carbon steel surfaces. Using yellow sand might be acceptable in cases where there is only a small amount of rust. If the client isn’t particular about it, then it’s fine
Thank you very much to all the forum members for their active discussions; thanks!
It is indeed a bit of a trick. I remember that professional anti-corrosion companies use cast steel balls for carbon steel, and quartz sand for stainless steel; it’s the first time I’ve seen yellow sand being used. They carry out sandblasting for corrosion protection at night; we haven’t seen the level of cleanliness or roughness, so it’s still difficult to guarantee the quality.
Yellow sand will work too; I used it to remove rust during a company maintenance task in the past, but after using it once I stopped relying on it – it’s not recommended. The site where rust is removed using sand is like a sandstorm, making it very difficult to keep it clean.
Well, yes. It fails to meet environmental protection standards.